Clean up anaconda repository #458

Job	Run time
Clean up anaconda packages (dppy/dpnp)	56s
Clean up anaconda packages (dppy/dpbench)	52s
Clean up anaconda packages (dppy/dpcpp-llvm-spirv)	51s
Clean up anaconda packages (dppy/dpctl)	53s
Clean up anaconda packages (dppy/numba-mlir)	59s
Clean up anaconda packages (dppy/numba-dpex)	47s
	5m 18s

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